Table of contents
Nmap
Nmap Free Security Scanner, Port Scanner, & Network Exploration Tool. Download open source software for Linux, Windows, UNIX, FreeBSD, etc.
A startup from the United States.
A startup from the United States.
Comprehensive Scanning
Nmap can perform a wide variety of scans, including port scanning, service detection, and OS fingerprinting, making it a versatile tool for network exploration and security auditing.
Open Source
As an open-source tool, Nmap is free to use and has a large community of users contributing to its development and improvement.
Scripting Engine
The Nmap Scripting Engine (NSE) allows users to write custom scripts to automate tasks, detect vulnerabilities, and extract information, significantly extending its capabilities.
Cross-Platform Support
Nmap is available on multiple platforms, including Windows, Linux, and macOS, ensuring broad accessibility for users.
Large Knowledge Base
Nmap has extensive documentation and a wealth of online resources, tutorials, and community support, making it easier for beginners to learn and use the tool effectively.
Performance Optimization
Nmap is designed to be efficient and can handle large networks, making it suitable for both small-scale and enterprise-level scanning.
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Yes, Nmap is a highly effective and reliable tool for network scanning and security auditing. Its comprehensive suite of features and frequent updates ensure it remains relevant in the constantly evolving landscape of network security.
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Check the traffic stats of Nmap on SimilarWeb. The key metrics to look for are: monthly visits, average visit duration, pages per visit, and traffic by country. Moreoever, check the traffic sources. For example "Direct" traffic is a good sign.
Check the "Domain Rating" of Nmap on Ahrefs. The domain rating is a measure of the strength of a website's backlink profile on a scale from 0 to 100. It shows the strength of Nmap's backlink profile compared to the other websites. In most cases a domain rating of 60+ is considered good and 70+ is considered very good.
Check the "Domain Authority" of Nmap on MOZ. A website's domain authority (DA) is a search engine ranking score that predicts how well a website will rank on search engine result pages (SERPs). It is based on a 100-point logarithmic scale, with higher scores corresponding to a greater likelihood of ranking. This is another useful metric to check if a website is good.
The latest comments about Nmap on Reddit. This can help you find out how popualr the product is and what people think about it.
Root@kali:~# sudo nmap -sn 192.168.56.0/24 Starting Nmap 7.94 ( https://nmap.org ) at 2026-04-21 09:14 BST Nmap scan report for 192.168.56.1 Host is up (0.00023s latency). Nmap scan report for 192.168.56.101 Host is up (0.00089s latency). MAC Address: 08:00:27:A1:B2:C3 (Oracle VirtualBox) Nmap done: 256 IP addresses (2 hosts up) scanned in 2.14s. - Source: dev.to / 3 months ago
Nmap -A -p139,445 10.129.22.59 Starting Nmap 7.94SVN ( https://nmap.org ) at 2026-04-20 15:42 CDT Nmap scan report for 10.129.22.59 Host is up (0.071s latency). PORT STATE SERVICE VERSION 139/tcp open netbios-ssn Samba smbd 3.X - 4.X (workgroup: WORKGROUP) 445/tcp open netbios-ssn Samba smbd 3.0.20-Debian (workgroup: WORKGROUP) Warning: OSScan results may be unreliable because we could not find at least... - Source: dev.to / 3 months ago
-- Example NSE script Local nmap = require "nmap" Local shortport = require "shortport" Local http = require "http" Description = [[ Example HTTP service detection script. ]] Author = "Your Name" License = "Same as Nmap--See https://nmap.org/book/man-legal.html" Categories = {"safe", "discovery"} Portrule = shortport.http Action = function(host, port) local response = http.get(host, port, "/") if... - Source: dev.to / 10 months ago
As described on its web site nmap is a Network exploration tool and security / port scanner. - Source: dev.to / about 1 year ago
Nmap (Network Mapper) is like a GPS for your network. Scan ports, find devices, and discover whatโs alive and vulnerable. - Source: dev.to / about 1 year ago
Start by mapping out your networkโs topology, including routers, switches, gateways, and the connections between different segments. Tools like Nmap or network diagram software can help visualize your networkโs structure. - Source: dev.to / about 1 year ago
If you want to scan a website, Nmap can help you find its open ports, see active IPs, and get other important details quickly. For anyone serious about cybersecurity, Nmap is a necessary tool. To learn more, visit their official website at Nmap.org. - Source: dev.to / about 1 year ago
Starting Nmap 7.80 ( https://nmap.org ) at 2025-04-12 00:10 IST Nmap scan report for scanme.nmap.org (45.33.32.156) Host is up (0.24s latency). Other addresses for scanme.nmap.org (not scanned): 2600:3c01::f03c:91ff:fe18:bb2f Not shown: 991 closed ports PORT STATE SERVICE 22/tcp open ssh 25/tcp filtered smtp 80/tcp open http 135/tcp filtered msrpc 139/tcp filtered netbios-ssn 161/tcp ... - Source: dev.to / over 1 year ago
The democratization of powerful software technologies is a double-edged sword. On one hand, open-source tools empower organizations and individuals to bolster their cybersecurity defenses without incurring steep financial costs. On the other hand, these same tools can be harnessed by malicious actors, leading to a surge in both the frequency and sophistication of cyberattacks. Open-source resources like Metasploit... - Source: dev.to / over 1 year ago
Cyberwarfare can range from cyber espionage to full-scale digital assaults against critical infrastructures. With the increasing frequency and sophistication of these attacks, the demand for transparent, flexible, and cost-effective cybersecurity solutions has never been higher. Open source cybersecurity tools meet this demand head-on. Their transparency allows vulnerabilities to be identified and fixed rapidly,... - Source: dev.to / over 1 year ago
โโโ(rootใฟkali)-[/home/kali/hackthebox/machines-linux/boardlight] โโ# nmap -sS --open -Pn 10.129.115.37 Starting Nmap 7.93 ( https://nmap.org ) at 2024-06-15 15:06 EDT Nmap scan report for 10.129.115.37 (10.129.115.37) Host is up (0.15s latency). Not shown: 998 closed tcp ports (reset) PORT STATE SERVICE 22/tcp open ssh 80/tcp open http. - Source: dev.to / over 1 year ago
Starting Nmap 7.80 ( https://nmap.org ) Nmap scan report for 192.168.1.1 Host is up (0.0010s latency). Not shown: 998 closed ports PORT STATE SERVICE 22/tcp open ssh 80/tcp open http Nmap scan report for 192.168.1.5 Host is up (0.0015s latency). Not shown: 999 closed ports PORT STATE SERVICE 22/tcp open ssh Nmap done: 10 IP addresses (2 hosts up) scanned in 2.05 seconds. - Source: dev.to / almost 2 years ago
A fair point, although nmap does list results as "closed", "open" or "open/filtered". Which can be ambiguous if the port is open or firewalled. However, if the nmap reports that port is "closed," it most likely is:- Source: Hacker News / almost 2 years agoStarting Nmap 7.92 ( https://nmap.org ) at 2024-09-26 20:02 EDT.
Starting Nmap 7.80 ( https://nmap.org ) at 2024-09-01 12:00 UTC Nmap scan report for example.com (93.184.216.34) Host is up (0.0050s latency). Not shown: 998 closed ports PORT STATE SERVICE 80/tcp open http 443/tcp open https. - Source: dev.to / almost 2 years ago
Found 1 job(s) Job: scan-nmap-jzmtq, Labels: map[securecodebox.io/job-type:scanner] Scan-nmap-jzmtq๐ก Streaming logs for job 'scan-nmap-jzmtq' and container 'nmap' Starting Nmap 7.95 ( https://nmap.org ) at 2024-08-23 11:59 UTC Nmap scan report for scanme.nmap.org (45.33.32.156) Host is up (0.33s latency). Other addresses for scanme.nmap.org (not scanned): 2600:3c01::f03c:91ff:fe18:bb2f Not shown: 996 closed tcp... - Source: dev.to / almost 2 years ago
$ sudo nmap -sS -p9000-9500 192.168.2.107 Starting Nmap 7.95 ( https://nmap.org ) at 2024-06-29 15:57 EDT Nmap scan report for dlm (192.168.2.107) Host is up (0.0084s latency). PORT STATE SERVICE 9000/tcp open cslistener 9001/tcp open tor-orport 9002/tcp open dynamid 9003/tcp open unknown 9004/tcp open unknown 9005/tcp open golem 9006/tcp open unknown 9007/tcp open ogs-client 9008/tcp open ... - Source: dev.to / about 2 years ago
Docker > nmap -v -A scanme.nmap.org Starting Nmap 7.93 ( https://nmap.org ) at 2024-01-22 10:38 UTC NSE: Loaded 155 scripts for scanning. NSE: Script Pre-scanning. Initiating NSE at 10:38 Completed NSE at 10:38, 0.00s elapsed Initiating NSE at 10:38 Completed NSE at 10:38, 0.00s elapsed Initiating NSE at 10:38 Completed NSE at 10:38, 0.00s elapsed Initiating Ping Scan at 10:38 Scanning scanme.nmap.org... - Source: dev.to / about 2 years ago
Following fingerprint at https://nmap.org/cgi-bin/submit.cgi?new-service :. - Source: Hacker News / over 2 years ago
A network scanner is a software tool that scans the network for connected devices. It is also used for diagnostic and investigative purposes to find and categorize what devices are running on a network. This tool takes an IP address or a range of IP addresses as input and then scans each IP Addresses sequentially and determines whether a device is present on that particular IP address or not. It scans the network... - Source: dev.to / over 2 years ago
โ ~ nmap 192.168.1.201 Starting Nmap 7.94 ( https://nmap.org ) at 2023-12-07 22:02 CET Nmap scan report for 192.168.1.201 Host is up (0.0061s latency). Not shown: 994 closed tcp ports (conn-refused) PORT STATE SERVICE 7000/tcp open afs3-fileserver 8008/tcp open http 8009/tcp open ajp13 8443/tcp open https-alt 9000/tcp open cslistener 9080/tcp open glrpc Nmap done: 1 IP address (1 host up) scanned in... Source: over 2 years ago
โโโ(figaroใฟkali)-[~/Desktop] โโ$ sudo nmap -O 142.250.203.131 1 โจฏ Starting Nmap 7.91 ( https://nmap.org ) at 2021-11-10 12:36 EST Nmap scan report for waw07s06-in-f3.1e100.net (142.250.203.131) Host is up (0.0034s latency). Not shown: 998 filtered ports PORT STATE SERVICE 80/tcp open http 443/tcp open https Warning: OSScan results may be... - Source: dev.to / over 2 years ago
Nmap, an acronym for "Network Mapper," has long been a cornerstone in the toolkit of network and cybersecurity professionals. Renowned for its open-source roots and robust capabilities, Nmap specializes in network scanning and mapping, helping users uncover live hosts, open ports, running services, and possible vulnerabilities across networks. Public discourse largely reflects Nmap's stature as an indispensable tool, albeit with certain nuances and criticisms.
Functionality and Capabilities: Nmap's primary strength lies in its extensive range of functionalities for network analysis. Users appreciate its ability to perform detailed port scans, service version detection, and operating system identification. The inclusion of the Nmap Scripting Engine (NSE) significantly enhances its flexibility by allowing complex network vulnerability assessments. This scripting capability empowers network administrators and cybersecurity professionals to customize scans for specialized needs, making it a versatile choice in the realm of network security tools.
Comparisons with Competitors: When evaluated alongside competitors like Angry IP Scanner, Cisco DNA Center, and Advanced IP Scanner, Nmap consistently stands out for its comprehensive command-line interface. Despite its lack of a native graphical user interface (GUI), which is often cited as a shortfall, Nmap provides powerful data-gathering capabilities that outweigh this limitation for many users. For those preferring a GUI, Zenmap offers a user-friendly alternative without sacrificing functionality. This flexibility contributes to Nmapโs continued preference among experienced IT professionals who value detailed control over network scans.
Usability and Accessibility: While widely praised for its capabilities, Nmap's command-line nature can intimidate newcomers or those requiring simpler tasks. This complexity may lead users seeking straightforward network monitoring tools to consider other options. Nevertheless, community resources, tutorials, and a strong support network alleviate some of these hurdles, facilitating user adoption. Despite its complexity, Nmap is praised for being multi-platform, supporting Windows, macOS, and Linux systems, which bolsters its accessibility across varying IT environments.
Role in Cybersecurity: Nmap's reputation as a foundational tool in cybersecurity is well-documented, accentuated by its open-source nature. This attribute not only removes financial barriers to access but also ensures that the tool evolves through global collaboration. This democratization of cybersecurity tools plays a dual role, enhancing both defensive measures and potential misuse by malicious entities. Acknowledged for its role in both ethical hacking and potential exploitation, Nmap reflects the broader conversation around the dual-use nature of open-source cybersecurity tools.
Market and Legacy: Celebrating over two decades in the field, Nmapโs legacy is underscored by its continued relevance in educational resources, cybersecurity competitions, and professional toolkits. It remains a tested and trusted solution amidst a rapidly evolving technological landscape. Its persistent updates and community-driven improvements ensure that Nmap remains at the forefront of network security practices, continuing to adapt to new challenges in the cybersecurity realm.
In summary, Nmap's prominence owes much to its proven reliability, broad range of functionalities, and the strong support of the open-source community. While its complexity may pose a challenge, its effectiveness in network scanning and security assessments makes it an invaluable asset within the cybersecurity industry.
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